Prior to the League September 1971, Basketball and Cheerleaders were the only sports in the high school. There were a few schools that had a swim team but they were under the aegis of the fathers of the students. All of the basketball games were arranged by invitation. A school would be called to arrange a game. Each coach was responsible to secure a referee and pay her. At that time there were three levels of referees: Associates, Locals and Nationals. There were no standings, playoffs or tournaments among the high schools. The idea to formalize teams and schedules came about and the GCHSAA was formed. At that time the principals were the legislative body of the league. The league had a president and the coaches made the schedule together and eventually the league hired an assignor for the games. This advanced the basketball teams to a more competitive level. Standings, trophies and award dinners gave more recognition to the players.

The first President of the league was Sister Mary Febronia. There was a Secretary and a Treasurer. Some of the Charter members were Helen Graham, Helen Lombardo, Sister Jane Bannon (the second President), Jane Modry, Jill Dalton, Sr. Virginia O'Connor, and several others.

In 1972 power volleyball came into play. YMCA and Brooklyn College sponsored clinics as not too many coaches knew the game. This became a new sport for the women. At the same time Title IX was enacted to assure that women received like benefits as their male counterparts.

In the mid 70's Tom Doshner from St. Francis Prep had a tennis team and looked for some tennis games and so another sport came to the girls'. Softball also began during this time. Swimming was formalized and came under the aegis of the league. Women were now in the position for college scholarships in sports. Many sports camps opened in the summer.

In the 80's Track and Field, Soccer and in the 90's Golf were all included in the Girls High School sports. Opportunities were now endless for the girls, with JV's in most schools. Participation in these sports was greater.